Mesh光网络基于有向P圈的保护配置策略  

A directional P-cycle-based protection deployment strategy in optical Mesh networks

作　　者：臧云华[1] 邓宇[1] 张杰[1] 顾畹仪[1] 

机构地区：[1]北京邮电大学光通信与光波技术教育部重点实验室,北京100876

出　　处：《光通信研究》2007年第4期12-15,共4页Study on Optical Communications

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-05-0112);国家"八六三计划"资助项目(2006AA01Z244)

摘　　要：文章针对波分复用(WDM)光网络的工作机制,提出了有向P圈的概念和WDM网络基于有向P圈的保护机制及配置策略。同时,提出了对偶圈合并法则和以此为基础的P圈生成和网络保护资源配置启发式算法。为了验证配置方案的有效性,利用OPNET Modeler搭建了自动交换光网络(ASON)-WDM仿真平台,在泛欧COST239网络拓扑和北美NSFnet网络拓扑上进行了大量仿真。仿真结果证明了P圈生成算法和有向P圈配置策略的有效性和可行性。In view of the working principle of the optical WDM network, the concept of directional P-cycle is presented and the directional P-cycle-based protection mechanism and deployment strategy expounded. Then the coupling cycle joint method and a heuristic algorithm for the growth of P-cycles and network protection resource deployment based on this method are proposed. Finally, simulations are conducted in COST239 and NSFnet topologies on the ASON-WDM platform set up by using OPNET Modeler. The results show that the algorithm and the deployment strategy are effective and feasible.

关 键 词：渡分复用光网络 生存性 有向P圈 对偶圈 容量效率 

分 类 号：TN929.11[电子电信—通信与信息系统]